Camera optical lens

ABSTRACT

The present disclosure relates to the technical field of optical lens and discloses a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens, a second lens having a positive refractive power, a third lens having a negative refractive power, a fourth lens, a fifth lens and a sixth lens. The camera optical lens satisfies following conditions: 1.00≤f1/f2≤3.00 and 4.00≤(R1+R2)/(R1−R2)≤15.00, where f1 denotes a focal length of the first lens; f2 denotes a focal length of the second lens; R1 denotes a curvature radius of an object-side surface of the first lens; and R2 denotes a curvature radius of an image-side surface of the first lens. The camera optical lens can achieve a high imaging performance while obtaining a low TTL.

TECHNICAL FIELD

The present disclosure relates to the field of optical lens, particular,to a camera optical lens suitable for handheld devices, such as smartphones and digital cameras, and imaging devices, such as monitors or PClenses.

BACKGROUND

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but in general thephotosensitive devices of camera lens are nothing more than ChargeCoupled Device (CCD) or Complementary Metal-Oxide Semiconductor Sensor(CMOS sensor), and as the progress of the semiconductor manufacturingtechnology makes the pixel size of the photosensitive devices becomesmaller, plus the current development trend of electronic productstowards better functions and thinner and smaller dimensions, miniaturecamera lens with good imaging quality therefore have become a mainstreamin the market. In order to obtain better imaging quality, the lens thatis traditionally equipped in mobile phone cameras adopts a three-pieceor four-piece lens structure. Also, with the development of technologyand the increase of the diverse demands of users, and as the pixel areaof photosensitive devices is becoming smaller and smaller and therequirement of the system on the imaging quality is improvingconstantly, the five-piece, six-piece and seven-piece lens structuregradually appear in lens designs. There is an urgent need for ultra-thinwide-angle camera lenses which with good optical characteristics andfully corrected chromatic aberration.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 1 of the present disclosure.

FIG. 2 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 1.

FIG. 3 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 1.

FIG. 4 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 1.

FIG. 5 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 2 of the present disclosure.

FIG. 6 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 5.

FIG. 7 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 5.

FIG. 8 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 5.

FIG. 9 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 3 of the present disclosure.

FIG. 10 is a schematic diagram of a longitudinal aberration of thecamera optical lens shown in FIG. 9.

FIG. 11 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 9.

FIG. 12 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 9.

DETAILED DESCRIPTION OF EMBODIMENTS

To make the objects, technical solutions, and advantages of the presentdisclosure clearer, embodiments of the present disclosure are describedin detail with reference to accompanying drawings in the following. Aperson of ordinary skill in the art can understand that, in theembodiments of the present disclosure, many technical details areprovided to make readers better understand the present disclosure.However, even without these technical details and any changes andmodifications based on the following embodiments, technical solutionsrequired to be protected by the present disclosure can be implemented.

Embodiment 1

Referring to the accompanying drawings, the present disclosure providesa camera optical lens 10. FIG. 1 shows the camera optical lens 10 ofEmbodiment 1 of the present disclosure, the camera optical lens 10includes six lenses. Specifically, the camera optical lens 10 includes,from an object side to an image side: an aperture S1, a first lens L1, asecond lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and asixth lens L6. An optical element such as an optical filter GF can bearranged between the sixth lens L6 and an image surface Si.

The first lens L1, the second lens L2, the third lens L3, the fourthlens L4, the fifth lens L5, and the sixth lens L6 are all made ofplastic material.

Here, a focal length of the first lens L1 is defined as f1, a focallength of the second lens L2 is defined as f2, and the camera opticallens 10 should satisfy a condition of 1.00≤f1/f2≤3.00, which specifies aratio of the focal length f1 of the first lens L1 and the focal lengthf2 of the second lens L2. This can effectively reduce a sensitivity ofthe camera optical lens and further enhance an imaging quality.Preferably, the camera optical lens 10 further satisfies a condition of1.02≤f1/f2≤3.00.

A curvature radius of an object-side surface of the first lens L1 isdefined as R1, a curvature radius of an image-side surface of the firstlens L1 is defined as R2, and the camera optical lens 10 furthersatisfies a condition of 4.00≤(R1+R2)/(R1−R2)≤15.00. This can reasonablycontrol a shape of the first lens L1 in such a manner that the firstlens L1 can effectively correct a spherical aberration of the cameraoptical lens. Preferably, the camera optical lens 10 further satisfies acondition of 4.08≤(R1+R2)/(R1−R2)≤14.95.

A total optical length from the object-side surface of the first lens L1to the image surface Si of the camera optical lens along an optical axisis defined as TTL.

When the focal length f1 of the first lens L1, the focal length f2 ofthe second lens L2, the curvature radius R1 of the object-side surfaceof the first lens L1, and the curvature radius R2 of the image-sidesurface of the first lens L1 all satisfy the above conditions, thecamera optical lens 10 has an advantage of high performance andsatisfies a design requirement of low TTL.

In an embodiment, the object-side surface of the first lens L1 isconcave in a paraxial region, the image-side surface of the first lensL1 is convex in the paraxial region, and the first lens L1 has apositive refractive power.

A focal length of the camera optical lens 10 is defined as f, the focallength of the first lens L1 is defined as f1, and the camera opticallens 10 should satisfy a condition of 1.22≤f1/f≤7.78, which specifies aratio of the focal length f1 of the first lens L1 and the focal length fof the camera optical lens 10. In this way, the first lens has anappropriate positive refractive power, thereby facilitating reducing anaberration of the system while facilitating a development towardsultra-thin and wide-angle lenses. Preferably, the camera optical lens 10further satisfies a condition of 1.96≤f1/f≤6.23.

An on-axis thickness of the first lens L1 is defined as d1, and thecamera optical lens 10 further satisfies a condition of0.03≤d1/TTL≤0.09. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.04≤d1/TTL≤0.07.

In an embodiment, an object-side surface of the second lens L2 is convexin the paraxial region, an image-side surface is concave in the paraxialregion; and the second lens L2 has a positive refractive power.

The focal length of the camera optical lens 10 is defined as f, thefocal length of the second lens L2 is defined as f2, and the cameraoptical lens 10 further satisfies a condition of 0.87≤f2/f≤3.53. Bycontrolling a positive refractive power of the second lens L2 within areasonable range, correction of the aberration of the optical system canbe facilitated. Preferably, the camera optical lens 10 further satisfiesa condition of 1.39≤f2/f≤2.83.

A curvature radius of the object-side surface of the second lens L2 isdefined as R3, a curvature radius of the image-side surface of thesecond lens L2 is defined as R4, and the camera optical lens 10 furthersatisfies a condition of −5.65≤(R3+R4)/(R3−R4)≤−1.58, which specifies ashape of the second lens L2. Within this range, a development towardsultra-thin and wide-angle lenses would facilitate correcting a problemof an on-axis aberration. Preferably, the camera optical lens 10 furthersatisfies a condition of −3.53≤(R3+R4)/(R3−R4)≤−1.98.

An on-axis thickness of the second lens L2 is defines as d3, and thecamera optical lens 10 further satisfies a condition of0.06≤d3/TTL≤0.18. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.09≤d3/TTL≤0.15.

In an embodiment, an object-side surface of the third lens L3 is convexin the paraxial region, an image-side surface is concave in the paraxialregion, and the third lens L3 has a negative refractive power.

A focal length of the third lens L3 is defined as f3, and the cameraoptical lens 10 further satisfies a condition of −32.92≤f3/f≤−5.46. Anappropriate distribution of the refractive power leads to a betterimaging quality and a lower sensitivity. Preferably, the camera opticallens 10 further satisfies a condition of −20.57≤f3/f≤−6.82.

A curvature radius of the object-side surface of the third lens L3 isdefined as R5, a curvature radius of the image-side surface of the thirdlens L3 is defined as R6, and the camera optical lens 10 furthersatisfies a condition of 2.00≤(R5+R6)/(R5−R6)≤10.76. This caneffectively control a shape of the third lens L3, thereby facilitatingshaping of the third lens and avoiding bad shaping and generation ofstress due to an the overly large surface curvature of the third lensL3. Preferably, the camera optical lens 10 further satisfies a conditionof 3.20≤(R5+R6)/(R5−R6)≤8.61.

An on-axis thickness of the third lens L3 is defined as d5, and thecamera optical lens 10 further satisfies a condition of0.03≤d5/TTL≤0.10. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.05≤d5/TTL≤0.08.

In an embodiment, an object-side surface of the fourth lens L4 isconcave in the paraxial region, an image-side surface of the fourth lensL4 is convex in the paraxial region, and the fourth lens L4 has apositive refractive power.

A focal length of the fourth lens L4 is defined as f4, and the cameraoptical lens 10 further satisfies a condition of 0.83≤f4/f≤2.55. Theappropriate distribution of refractive power makes it possible that thesystem has the better imaging quality and the lower sensitivity.Preferably, the camera optical lens 10 further satisfies a condition of1.33≤f4/f≤2.04.

A curvature radius of the object-side surface of the fourth lens L4 isdefined as R7, a curvature radius of the image-side surface of thefourth lens L4 is defined as R8, and the camera optical lens 10 furthersatisfies a condition of 0.99≤(R7+R8)/(R7−R8)≤3.04, which specifies ashape of the fourth lens L4. Within this range, a development towardsultra-thin and wide-angle lens would facilitate correcting a problemlike an off-axis aberration. Preferably, the camera optical lens 10further satisfies a condition of 1.59≤(R7+R8)/(R7−R8)≤2.43.

An on-axis thickness of the fourth lens L4 is defined as d7, and thecamera optical lens 10 further satisfies a condition of0.04≤d7/TTL≤0.13. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.06≤d7/TTL≤0.10.

In an embodiment, an object-side surface of the fifth lens L5 is concavein the paraxial region, an image-side surface of the fifth lens L5 isconvex in the paraxial region, and the fifth lens L5 has a negativerefractive power.

A focal length of the fifth lens L5 is defined as f5, and the cameraoptical lens 10 further satisfies a condition of −2.34≤f5/f≤−0.77, whichcan effectively make a light angle of the camera lens gentle and reducean tolerance sensitivity. Preferably, the camera optical lens 10 furthersatisfies a condition of −1.47≤f5/f≤−0.96.

A curvature radius of the object-side surface of the fifth lens L5 isdefined as R9, a curvature radius of the image-side surface of the fifthlens L5 is defined as R10, and the camera optical lens 10 furthersatisfies a condition of −8.61≤(R9+R10)/(R9−R10)≤−2.75, which specifiesa shape of the fifth lens L5. Within this range, a development towardsultra-thin and wide-angle lenses can facilitate correcting a problem ofthe off-axis aberration. Preferably, the camera optical lens 10 furthersatisfies a condition of −5.38≤(R9+R10)/(R9−R10)≤−3.44.

An on-axis thickness of the fifth lens L5 is defined as d9, and thecamera optical lens 10 further satisfies a condition of0.03≤d9/TTL≤0.10. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.05≤d9/TTL≤0.08.

In an embodiment, an object-side surface of the sixth lens L6 is convexin the paraxial region, an image-side surface of the sixth lens L6 isconcave in the paraxial region, and the sixth lens L6 has a positiverefractive power.

A focal length of the sixth lens L6 is defined as f6, and the cameraoptical lens 10 further satisfies a condition of 0.88≤f6/f≤2.65. Theappropriate distribution of the refractive power leads to the betterimaging quality and the lower sensitivity. Preferably, the cameraoptical lens 10 further satisfies a condition of 1.40≤f6/f≤2.12.

A curvature radius of the object-side surface of the sixth lens L6 isdefined as R11, a curvature radius of the image-side surface of thesixth lens L6 is defined as R12, and the camera optical lens 10 furthersatisfies a condition of −42.79≤(R11+R12)/(R11−R12)≤−13.66, whichspecifies a shape of the sixth lens L6. Within this range, a developmenttowards ultra-thin and wide-angle lenses would facilitate correcting theproblem of the off-axis aberration. Preferably, the camera optical lens10 further satisfies a condition of −26.74≤(R11+R12)/(R11−R12)≤−17.08.

An on-axis thickness of the sixth lens L6 is defined as d11, and thecamera optical lens 10 further satisfies a condition of0.08≤d11/TTL≤0.24. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.12≤d11/TTL≤0.19.

In an embodiment, a combined focal length of the first lens and of thesecond lens is defined as f12, and the camera optical lens 10 furthersatisfies a condition of 0.58≤f12/f≤1.89. This can eliminate theaberration and distortion of the camera optical lens and reduce a backfocal length of the camera optical lens, thereby maintainingminiaturization of the camera optical lens. Preferably, the cameraoptical lens 10 further satisfies a condition of 0.93≤f12/f≤1.52.

In an embodiment, the total optical length TTL of the camera opticallens 10 is less than or equal to 5.06 mm, which is beneficial forachieving ultra-thin lenses. Preferably, the total optical length TTL ofthe camera optical lens 10 is less than or equal to 4.83 mm.

In an embodiment, an F number of the camera optical lens 10 is less thanor equal to 2.27. The camera optical lens has a large aperture and abetter imaging performance. Preferably, the F number of the cameraoptical lens 10 is less than or equal to 2.22.

With such designs, the total optical length TTL of the camera opticallens 10 can be made as short as possible, thus the miniaturizationcharacteristics can be maintained.

In the following, examples will be used to describe the camera opticallens 10 of the present disclosure. The symbols recorded in each examplewill be described as follows. The focal length, on-axis distance,curvature radius, on-axis thickness, inflexion point position, andarrest point position are all in units of mm.

TTL: Optical length (the total optical length from the object-sidesurface of the first lens to the image surface of the camera opticallens along the optical axis) in mm.

Preferably, inflexion points and/or arrest points can be arranged on theobject-side surface and/or the image-side surface of the lens, so as tosatisfy the demand for high quality imaging. The description below canbe referred for specific implementations.

The design data of the camera optical lens 10 in Embodiment 1 of thepresent disclosure are shown in Table 1 and Table 2.

TABLE 1 R d nd vd S1  ∞ d0=  0.170 R1  −1.798 d1=  0.253 nd1 1.5445 v155.99 R2  −1.572 d2=  0.030 R3  1.904 d3=  0.561 nd2 1.5445 v2 55.99 R4 4.680 d4=  0.183 R5  11.107 d5=  0.293 nd3 1.6613 v3 20.37 R6  8.263d6=  0.269 R7  −5.935 d7=  0.373 nd4 1.5352 v4 56.09 R8  −1.985 d8= 0.365 R9  −0.677 d9=  0.276 nd5 1.6713 v5 19.24 R10 −1.087 d10= 0.041R11 0.969 d11= 0.705 nd6 1.5352 v6 56.09 R12 1.068 d12= 0.942 R13 ∞ d13=0.210 ndg 1.5168 vg 64.17 R14 ∞ d14= 0.100

In the table, meanings of various symbols will be described as follows.

S1: aperture;

R: curvature radius of an optical surface, a central curvature radiusfor a lens;

R1: curvature radius of the object-side surface of the first lens L1;

R2: curvature radius of the image-side surface of the first lens L1;

R3: curvature radius of the object-side surface of the second lens L2;

R4: curvature radius of the image-side surface of the second lens L2;

R5: curvature radius of the object-side surface of the third lens L3;

R6: curvature radius of the image-side surface of the third lens L3;

R7: curvature radius of the object-side surface of the fourth lens L4;

R8: curvature radius of the image-side surface of the fourth lens L4;

R9: curvature radius of the object-side surface of the fifth lens L5;

R10: curvature radius of the image-side surface of the fifth lens L5;

R11: curvature radius of the object-side surface of the sixth lens L6;

R12: curvature radius of the image-side surface of the sixth lens L6;

R13: curvature radius of an object-side surface of the optical filterGF;

R14: curvature radius of an image-side surface of the optical filter GF;

d: on-axis thickness of a lens and an on-axis distance between lens;

d0: on-axis distance from the aperture S1 to the object-side surface ofthe first lens L1;

d1: on-axis thickness of the first lens L1;

d2: on-axis distance from the image-side surface of the first lens L1 tothe object-side surface of the second lens L2;

d3: on-axis thickness of the second lens L2;

d4: on-axis distance from the image-side surface of the second lens L2to the object-side surface of the third lens L3;

d5: on-axis thickness of the third lens L3;

d6: on-axis distance from the image-side surface of the third lens L3 tothe object-side surface of the fourth lens L4;

d7: on-axis thickness of the fourth lens L4;

d8: on-axis distance from the image-side surface of the fourth lens L4to the object-side surface of the fifth lens L5;

d9: on-axis thickness of the fifth lens L5;

d10: on-axis distance from the image-side surface of the fifth lens L5to the object-side surface of the sixth lens L6;

d11: on-axis thickness of the sixth lens L6;

d12: on-axis distance from the image-side surface of the sixth lens L6to the object-side surface of the optical filter GF;

d13: on-axis thickness of the optical filter GF;

d14: on-axis distance from the image-side surface to the image surfaceof the optical filter GF;

nd: refractive index of the d line;

nd1: refractive index of the d line of the first lens L1;

nd2: refractive index of the d line of the second lens L2;

nd3: refractive index of the d line of the third lens L3;

nd4: refractive index of the d line of the fourth lens L4;

nd5: refractive index of the d line of the fifth lens L5;

nd6: refractive index of the d line of the sixth lens L6;

ndg: refractive index of the d line of the optical filter GF;

vd: abbe number;

v1: abbe number of the first lens L1;

v2: abbe number of the second lens L2;

v3: abbe number of the third lens L3;

v4: abbe number of the fourth lens L4;

v5: abbe number of the fifth lens L5;

v6: abbe number of the sixth lens L6;

vg: abbe number of the optical filter GF.

Table 2 shows aspherical surface data of the camera optical lens 10 inEmbodiment 1 of the present disclosure.

TABLE 2 Conic coefficient Aspheric surface coefficients k A4 A6 A8 A10A12 A14 A16 R1  −3.2123E+00 −1.0841E−01  1.9288E−01 −4.3181E−01 3.1429E−01  2.1472E+00 −5.6609E+00  4.0924E+00 R2  −7.9637E+00−2.3523E−01  4.5987E−01 −6.8955E−01  2.0317E−01  1.9787E+00 −3.7679E+00 2.1253E+00 R3  −2.9673E+00  5.2796E−02  3.1167E−02 −9.0518E−02 2.6703E−02  2.2620E−02 −5.4721E−02 −3.1772E−02 R4  −6.0521E+01−8.2294E−02 −1.4569E−01 −1.7097E−02  1.4251E−01 −7.6225E−02 −3.8011E−02 2.5613E−02 R5   1.1476E+02 −1.5058E−01 −1.4179E−01 −8.7104E−02 1.8386E−01  1.5936E−01 −4.2459E−02 −7.5788E−02 R6  −1.2699E+01−5.6140E−02 −8.0806E−02  7.0877E−03  7.0092E−02  2.1491E−02 −4.2754E−02 3.7977E−02 R7   2.8354E+01 −1.1176E−01  3.2241E−02  1.9152E−02−3.2007E−02 −4.9004E−03  7.7743E−02 −2.0354E−02 R8   1.4373E+00−9.7731E−02  6.1278E−02  2.5122E−02  1.0954E−02  1.4487E−02  5.7813E−03−3.2164E−03 R9  −4.8819E+00  3.4330E−03 −3.9096E−03  6.1054E−03−3.0614E−03 −4.2898E−03 −1.0187E−03  6.5413E−04 R10 −5.8396E+00 5.4696E−02 −1.2860E−02 −1.3940E−03  1.1840E−05  1.6618E−04  3.0111E−05−6.8172E−06 R11 −5.7502E+00 −6.9612E−02  8.4969E−03  2.8394E−04−1.8293E−05 −4.4940E−06 −2.1943E−06  2.7599E−07 R12 −4.3834E+00−4.6612E−02  8.5862E−03 −1.2177E−03  5.8984E−05  2.8734E−06 −4.9541E−08−2.7393E−08

Here, K is a conic coefficient, and A4, A6, A8, A10, A12, A14, and A16are aspheric surface coefficients.

IH: Image height

y=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x4+A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶  (1)

For convenience, an aspheric surface of each lens surface uses theaspheric surfaces shown in the above formula (1). However, the presentdisclosure is not limited to the aspherical polynomials form shown inthe formula (1).

Table 3 and Table 4 show design data of inflexion points and arrestpoints of the camera optical lens 10 according to Embodiment 1 of thepresent disclosure. P1R1 and P1R2 represent the object-side surface andthe image-side surface of the first lens L1, P2R1 and P2R2 represent theobject-side surface and the image-side surface of the second lens L2,P3R1 and P3R2 represent the object-side surface and the image-sidesurface of the third lens L3, P4R1 and P4R2 represent the object-sidesurface and the image-side surface of the fourth lens L4, P5R1 and P5R2represent the object-side surface and the image-side surface of thefifth lens L5, P6R1 and P6R2 represent the object-side surface and theimage-side surface of the sixth lens L6. The data in the column named“inflexion point position” refer to vertical distances from inflexionpoints arranged on each lens surface to the optical axis of the cameraoptical lens 10. The data in the column named “arrest point position”refer to vertical distances from arrest points arranged on each lenssurface to the optical axis of the camera optical lens 10.

TABLE 3 Number of Inflexion point Inflexion point Inflexion pointinflexion points position 1 position 2 position 3 P1R1 0 P1R2 0 P2R1 10.765 P2R2 1 0.325 P3R1 2 0.225 0.815 P3R2 2 0.355 0.805 P4R1 1 0.865P4R2 1 0.845 P5R1 0 P5R2 3 0.655 1.245 1.445 P6R1 2 0.575 1.855 P6R2 10.725

TABLE 4 Number of Arrest point Arrest point arrest points position 1position 2 P1R1 0 P1R2 0 P2R1 0 P2R2 1 0.535 P3R1 1 0.365 P3R2 2 0.5750.895 P4R1 0 P4R2 1 1.075 P5R1 0 P5R2 0 P6R1 1 1.335 P6R2 1 1.715

FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateralcolor with wavelengths of 470.0 nm, 555.0 nm and 650.0 nm after passingthe camera optical lens 10 according to Embodiment 1, respectively. FIG.4 illustrates a field curvature and a distortion with a wavelength of555.0 nm after passing the camera optical lens 10 according toEmbodiment 1. A field curvature S in FIG. 4 is a field curvature in asagittal direction, and T is a field curvature in a tangentialdirection.

Table 13 in the following shows various values of Embodiments 1, 2, 3and values corresponding to parameters which are specified in the aboveconditions.

As shown in Table 13, Embodiment 1 satisfies the above conditions.

In this Embodiment, an entrance pupil diameter of the camera opticallens is 1.436 mm, an image height of 1.0H is 3.284 mm, an FOV (field ofview) in a diagonal direction is 91.62°. Thus, the camera optical lenshas a wide-angle and is ultra-thin. Its on-axis and off-axis aberrationsare fully corrected, thereby achieving excellent opticalcharacteristics.

Embodiment 2

Embodiment 2 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

Table 5 and Table 6 show design data of a camera optical lens 20 inEmbodiment 2 of the present disclosure.

TABLE 5 R d nd vd S1  ∞ d0=  0.170 R1  −1.944 d1=  0.258 nd1 1.5445 v155.99 R2  −1.591 d2=  0.025 R3  2.014 d3=  0.548 nd2 1.5445 v2 55.99 R4 4.522 d4=  0.183 R5  10.739 d5=  0.281 nd3 1.6613 v3 20.37 R6  8.111d6=  0.270 R7  −5.976 d7=  0.372 nd4 1.5352 v4 56.09 R8  −1.975 d8= 0.365 R9  −0.675 d9=  0.287 nd5 1.6713 v5 19.24 R10 −1.086 d10= 0.030R11 0.970 d11= 0.726 nd6 1.5352 v6 56.09 R12 1.065 d12= 0.946 R13 ∞ d13=0.210 ndg 1.5168 vg 64.17 R14 ∞ d14= 0.100

Table 6 shows aspherical surface data of each lens of the camera opticallens 20 in Embodiment 2 of the present disclosure.

TABLE 6 Conic coefficient Aspheric surface coefficients k A4 A6 A8 A10A12 A14 A16 R1  8.5081E−01 −1.1836E−01  2.0416E−01 −4.1773E−01 3.2533E−01  2.1330E+00 −5.7462E+00  4.1431E+00 R2  8.5081E−01−2.3597E−01  4.6551E−01 −6.9027E−01  1.7134E−01  2.0874E+00 −3.9175E+00 2.2006E+00 R3  1.0305E+00  6.0806E−02  3.1051E−02 −9.9716E−02 2.3307E−02  3.2860E−02 −3.1269E−02 −6.6899E−02 R4  1.0305E+00−7.6782E−02 −1.4216E−01 −2.0927E−02  1.3978E−01 −7.7087E−02 −4.5770E−02 3.0641E−02 R5  1.0080E+00 −1.5121E−01 −1.4015E−01 −8.9944E−02 1.8083E−01  1.5464E−01 −4.4891E−02 −6.7401E−02 R6  1.0080E+00−5.6778E−02 −8.5948E−02  4.6574E−03  7.1215E−02  2.4554E−02 −4.2892E−02 3.3493E−02 R7  1.1226E+00 −1.1183E−01  3.1631E−02  1.8899E−02−3.2040E−02 −9.8692E−03  7.5006E−02 −2.0226E−02 R8  1.1226E+00−9.8631E−02  6.0941E−02  2.5641E−02  1.1004E−02  1.5083E−02  5.4882E−03−3.2526E−03 R9  1.5785E+00  4.4015E−03 −3.3470E−03  6.1716E−03−2.9405E−03 −4.2690E−03 −1.0349E−03  7.8782E−04 R10 1.5785E+00 5.4839E−02 −1.2734E−02 −1.3478E−03  5.8017E−05  1.7688E−04  2.9606E−05−9.6036E−06 R11 2.8118E+00 −6.9492E−02  8.5037E−03  2.8946E−04−1.8923E−05 −4.5804E−06 −2.1925E−06  2.7726E−07 R12 2.8118E+00−4.6445E−02  8.6390E−03 −1.2132E−03  5.7791E−05  2.7079E−06 −5.3266E−08−2.4474E−08

Table 7 and table 8 show design data of inflexion points and arrestpoints of each lens of the camera optical lens 20 lens according toEmbodiment 2 of the present disclosure.

TABLE 7 Number of Inflexion point Inflexion point inflexion pointsposition 1 position 2 P1R1 0 P1R2 1 0.805 P2R1 1 0.765 P2R2 1 0.335 P3R12 0.225 0.815 P3R2 2 0.355 0.815 P4R1 1 0.885 P4R2 1 0.845 P5R1 0 P5R2 10.655 P6R1 2 0.575 1.855 P6R2 1 0.725

TABLE 8 Number of Arrest point Arrest point arrest points position 1position 2 P1R1 0 P1R2 0 P2R1 1 0.935 P2R2 1 0.545 P3R1 2 0.375 0.965P3R2 2 0.575 0.915 P4R1 0 P4R2 1 1.075 P5R1 0 P5R2 0 P6R1 1 1.335 P6R2 11.725

FIG. 6 and FIG. 7 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 470.0 nm, 555.0 nm and 650.0 nm afterpassing the camera optical lens 20 according to Embodiment 2. FIG. 8illustrates a field curvature and a distortion of light with awavelength of 555.0 nm after passing the camera optical lens 20according to Embodiment 2.

As shown in Table 13, Embodiment 2 satisfies the above conditions.

In an embodiment, an entrance pupil diameter of the camera optical lensis 1.494 mm, an image height of 1.0H is 3.284 mm, an FOV (field of view)in the diagonal direction is 91.71°. Thus, the camera optical lens has awide-angle and is ultra-thin. Its on-axis and off-axis aberrations arefully corrected, thereby achieving excellent optical characteristics.

Embodiment 3

Embodiment 3 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

Table 9 and Table 10 show design data of a camera optical lens 30 inEmbodiment 3 of the present disclosure.

TABLE 9 R d nd vd S1  ∞ d0=  0.160 R1  −2.931 d1=  0.281 nd1 1.5445 v155.99 R2  −1.793 d2=  0.030 R3  2.300 d3=  0.543 nd2 1.5445 v2 55.99 R4 4.819 d4=  0.177 R5  11.291 d5=  0.259 nd3 1.6613 v3 20.37 R6  6.777d6=  0.240 R7  −5.746 d7=  0.389 nd4 1.5352 v4 56.09 R8  −1.947 d8= 0.234 R9  −0.698 d9=  0.321 nd5 1.6713 v5 19.24 R10 −1.144 d10= 0.030R11 0.983 d11= 0.734 nd6 1.5352 v6 56.09 R12 1.082 d12= 1.050 R13 ∞ d13=0.210 ndg 1.5168 vg 64.17 R14 ∞ d14= 0.100

Table 10 shows aspherical surface data of each lens of the cameraoptical lens 30 in Embodiment 3 of the present disclosure.

TABLE 10 Conic coefficient Aspherical surface coefficients k A4 A6 A8A10 A12 A14 A16 R1   1.8156E+00 −1.8013E−01  2.0451E−01 −3.8179E−01 3.3184E−01  2.0717E+00 −5.7654E+00  4.2243E+00 R2  −8.4586E+00−2.6582E−01  4.3217E−01 −6.6366E−01  2.1770E−01  2.0172E+00 −4.0588E+00 2.4093E+00 R3  −9.3059E−01  6.5931E−02  2.6581E−02 −8.3786E−02 2.5638E−02 −1.2638E−03 −5.8886E−02  1.8083E−02 R4  −3.3565E+01−7.3910E−02 −1.5611E−01 −2.6651E−02  1.6062E−01 −6.6646E−02 −5.8475E−02 4.2620E−02 R5   1.2141E+02 −1.4318E−01 −1.3965E−01 −8.5050E−02 1.9022E−01  1.6536E−01 −5.7040E−02 −7.5053E−02 R6   8.1558E+00−5.5815E−02 −7.3586E−02  1.9096E−02  7.2894E−02  1.7785E−02 −4.7089E−02 3.4322E−02 R7   2.7540E+01 −1.0946E−01  3.3244E−02  1.4740E−02−2.8588E−02 −1.1085E−02  8.2785E−02 −2.3556E−02 R8   1.4545E+00−9.6551E−02  6.2247E−02  2.5727E−02  1.2229E−02  1.4073E−02  5.4331E−03−2.4172E−03 R9  −4.8812E+00  8.9499E−03 −4.5397E−03  6.5157E−03−2.9110E−03 −5.2770E−03 −2.0100E−03  1.9946E−04 R10 −5.6784E+00 5.4916E−02 −1.3242E−02 −1.7517E−03 −1.1300E−04  1.2921E−04  3.0614E−05 1.1389E−05 R11 −5.3000E+00 −6.9280E−02  8.5720E−03  2.9088E−04−2.0325E−05 −5.1221E−06 −2.1923E−06  2.8563E−07 R12 −4.0983E+00−4.6942E−02  8.5338E−03 −1.1886E−03  6.0135E−05  2.7149E−06 −8.1913E−08−2.6581E−08

Table 11 and Table 12 show design data inflexion points and arrestpoints of the respective lenses in the camera optical lens 30 accordingto Embodiment 3 of the present disclosure.

TABLE 11 Number of Inflexion point Inflexion point Inflexion pointinflexion points position 1 position 2 position 3 P1R1 0 P1R2 0 P2R1 10.795 P2R2 1 0.345 P3R1 2 0.225 0.805 P3R2 2 0.405 0.765 P4R1 1 0.885P4R2 1 0.845 P5R1 0 P5R2 3 0.675 1.125 1.425 P6R1 2 0.595 1.855 P6R2 10.745

TABLE 12 Number of Arrest point Arrest point arrest points position 1position 2 P1R1 0 P1R2 0 P2R1 0 P2R2 1 0.555 P3R1 2 0.365 0.955 P3R2 20.705 0.805 P4R1 0 P4R2 0 P5R1 0 P5R2 0 P6R1 1 1.385 P6R2 1 1.745

FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 470.0 nm, 555.0 nm and 650.0 nm afterpassing the camera optical lens 30 according to Embodiment 3. FIG. 12illustrates a field curvature and a distortion of light with awavelength of 555.0 nm after passing the camera optical lens 30according to Embodiment 3.

Table 13 in the following lists values corresponding to the respectiveconditions in an embodiment according to the above conditions.Obviously, the embodiment satisfies the above conditions.

In an embodiment, an entrance pupil diameter of the camera optical lensis 1.4437 mm, an image height of 1.0H is 3.284 mm, an FOV (field ofview) in the diagonal direction is 91.25°. Thus, the camera optical lenshas a wide-angle and is ultra-thin. Its on-axis and off-axis aberrationsare fully corrected, thereby achieving excellent opticalcharacteristics.

TABLE 13 Parameters and conditions Embodiment 1 Embodiment 2 Embodiment3 f 3.160 3.153 3.176 f1 16.393 12.741 7.772 f2 5.483 6.171 7.484 f3−50.434 −51.899 −26.008 f4 5.377 5.323 5.295 f5 −3.636 −3.656 −3.724 f65.576 5.518 5.579 f12 3.926 3.982 3.684 FNO 2.20 2.11 2.20 f1/f2 2.992.07 1.04 (R1 + R2)/(R1 − R2) 14.90 10.01 4.15

It can be appreciated by one having ordinary skill in the art that thedescription above is only embodiments of the present disclosure. Inpractice, one having ordinary skill in the art can make variousmodifications to these embodiments in forms and details withoutdeparting from the scope of the present disclosure.

What is claimed is:
 1. A camera optical lens comprising, from an objectside to an image side: a first lens; a second lens having a positiverefractive power; a third lens having a negative refractive power; afourth lens; a fifth lens; and a sixth lens; wherein the camera opticallens satisfies following conditions:1.00≤f1/f2≤3.00; and4.00≤(R1+R2)/(R1−R2)≤15.00; where f1 denotes a focal length of the firstlens; f2 denotes a focal length of the second lens; R1 denotes acurvature radius of an object-side surface of the first lens; and R2denotes a curvature radius of an image-side surface of the first lens.2. The camera optical lens according to claim 1 further satisfyingfollowing conditions:1.2≤f1/f2≤3.00; and4.08≤(R1+R2)/(R1−R2)≤14.95.
 3. The camera optical lens according toclaim 1, wherein the first lens has a positive refractive power, theobject-side surface of the first lens is concave in a paraxial regionand the image-side surface of the first lens is convex in the paraxialregion; and the camera optical lens further satisfies followingconditions:1.22≤f1/f≤7.78; and0.03≤d1/TTL≤0.09; where f denotes a focal length of the camera opticallens; d1 denotes an on-axis thickness of the first lens; and TTL denotesa total optical length from the object-side surface of the first lens toan image surface of the camera optical lens along an optical axis. 4.The camera optical lens according to claim 3 further satisfyingfollowing conditions:1.96≤f1/f≤6.23; and0.04≤d1/TTL≤0.07.
 5. The camera optical lens according to claim 1,wherein the second lens comprises an object-side surface being convex ina paraxial region and an image-side surface being concave in theparaxial region; and the camera optical lens further satisfies followingconditions:0.87≤f2/f≤3.53;−5.65≤(R3+R4)/(R3−R4)≤−1.58; and0.06≤d3/TTL≤0.18; where f denotes a focal length of the camera opticallens; R3 denotes a curvature radius of the object-side surface of thesecond lens; R4 denotes a curvature radius of the image-side surface ofthe second lens; d3 denotes an on-axis thickness of the second lens; andTTL denotes a total optical length from the object-side surface of thefirst lens to an image surface of the camera optical lens along anoptical axis.
 6. The camera optical lens according to claim 5 furthersatisfying following conditions:1.39≤f2/f≤2.83;−3.53≤(R3+R4)/(R3−R4)≤−1.98; and0.09≤d3/TTL≤0.15.
 7. The camera optical lens according to claim 1,wherein the third lens comprises an object-side surface being convex ina paraxial region and an image-side surface being concave in theparaxial region, and the camera optical lens further satisfies followingconditions:−32.92≤f3/f≤−5.46;2.00≤(R5+R6)/(R5−R6)≤10.76; and0.03≤d5/TTL≤0.10; where f denotes a focal length of the camera opticallens; f3 denotes a focal length of the third lens; R5 denotes acurvature radius of the object-side surface of the third lens; R6denotes a curvature radius of the image-side surface of the third lens;d5 denotes an on-axis thickness of the third lens; and TTL denotes atotal optical length from the object-side surface of the first lens toan image surface of the camera optical lens along an optical axis. 8.The camera optical lens according to claim 7 further satisfyingfollowing conditions:−20.57≤f3/f≤−6.82;3.20≤(R5+R6)/(R5−R6)≤8.61; and0.05≤d5/TTL≤0.08.
 9. The camera optical lens according to claim 1,wherein the fourth lens has a positive refractive power, and comprisesan object-side surface being concave in a paraxial region and animage-side surface being convex in the paraxial region, and the cameraoptical lens further satisfies following conditions:0.83≤f4/f≤2.55;0.99≤(R7+R8)/(R7−R8)≤3.04; and0.04≤d7/TTL≤0.13; where f denotes a focal length of the camera opticallens; f4 denotes a focal length of the fourth lens; R7 denotes acurvature radius of the object-side surface of the fourth lens; R8denotes a curvature radius of the image-side surface of the fourth lens;d7 denotes an on-axis thickness of the fourth lens; and TTL denotes atotal optical length from the object-side surface of the first lens toan image surface of the camera optical lens along an optical axis. 10.The camera optical lens according to claim 9 further satisfyingfollowing conditions:1.33≤f4/f≤2.04;1.59≤(R7+R8)/(R7−R8)≤2.43; and0.06≤d7/TTL≤0.10.
 11. The camera optical lens according to claim 1,wherein the fifth lens has a negative refractive power, and comprises anobject-side surface being concave in a paraxial region and an image-sidesurface being convex in the paraxial region, and the camera optical lensfurther satisfies following conditions:−2.34≤f5/f≤−0.77;−8.61≤(R9+R10)/(R9−R10)≤−2.75; and0.03≤d9/TTL≤0.10; where f denotes a focal length of the camera opticallens; f5 denotes a focal length of the fifth lens; R9 denotes acurvature radius of the object-side surface of the fifth lens; R10denotes a curvature radius of the image-side surface of the fifth lens;d9 denotes an on-axis thickness of the fifth lens; and TTL denotes atotal optical length from the object-side surface of the first lens toan image surface of the camera optical lens along an optical axis. 12.The camera optical lens according to claim 11 further satisfyingfollowing conditions:−1.47≤f5/f≤−0.96;−5.38≤(R9+R10)/(R9−R10)≤−3.44; and0.05≤d9/TTL≤0.08.
 13. The camera optical lens according to claim 1,wherein the sixth lens has a positive refractive power, and comprises anobject-side surface being convex in a paraxial region and an image-sidesurface being concave in the paraxial region, and the camera opticallens further satisfies following conditions:0.88≤f6/f≤2.65;−42.79≤(R11+R12)/(R11−R12)≤−13.66; and0.08≤d11/TTL≤0.24; where f denotes a focal length of the camera opticallens; f6 denotes a focal length of the sixth lens; R11 denotes acurvature radius of the object-side surface of the sixth lens; R12denotes a curvature radius of the image-side surface of the sixth lens;d11 denotes an on-axis thickness of the sixth lens; and TTL denotes atotal optical length from the object-side surface of the first lens toan image surface of the camera optical lens along an optical axis. 14.The camera optical lens according to claim 13 further satisfyingfollowing conditions:1.40≤f6/f≤2.12;−26.74≤(R11+R12)/(R11−R12)≤−17.08; and0.12≤d11/TTL≤0.19.
 15. The camera optical lens according to claim 1further satisfying following condition:0.58≤f12/f≤1.89; where f denotes a focal length of the camera opticallens; f12 denotes a combined focal length of the first lens and thesecond lens.
 16. The camera optical lens according to claim 15 furthersatisfying following condition:0.93≤f12/f≤1.52.
 17. The camera optical lens according to claim 1, wherea total optical length TTL from the object-side surface of the firstlens to an image surface of the camera optical lens along an opticalaxis is less than or equal to 5.06 mm.
 18. The camera optical lensaccording to claim 17, wherein the total optical length TTL of thecamera optical lens is less than or equal to 4.83 mm.
 19. The cameraoptical lens according to claim 1, wherein an F number of the cameraoptical lens is less than or equal to 2.27.
 20. The camera optical lensaccording to claim 19, wherein the F number of the camera optical lensis less than or equal to 2.22.